: This is usually a tag for "Bypass Full Integrity," implying the app's digital signatures have been modified to run on non-standard systems. ipa : The file format for iOS applications. Why You Should Use the Official App
: Sleep tracking algorithms are frequently updated to match new Apple Watch sensor capabilities. Unofficial versions will not receive these updates.
: Indicates compatibility with 64-bit processors (standard for modern iPhones). os110 : Likely means it requires iOS 11.0 or higher.